Rolling screen



J. HERNACKI.

ROLLING SCREEN.

APPLICATION FILED MAR. 13, 1919.

Patented Mar.- 15, 1921.

a' xzazl UNITED STATES JOHN flERN'AGKI, OF CHICAGO, ILLINOIS.

ROLLING SCREEN.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed March 13, 1919. Serial No. 282,474.

To all whom it may concern:

Be it known that I, JOHN HERNACKI,. a citizen of the United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have invented new and useful Improvements in Rolling Screens,of which the following is a specification.

The purpose of the invention is to provide a rolling screen for windows,the screen comprising a spring actuated roller rotatably mounted in ahousing adapted for attachment to a window frame at the top, preferablyon the outside. The screen is bound upon either longitudinal edge bysuitable flexible strips riveted or otherwise suitably attached togetheron opposite sides of the screen and these strips carry suitable guidehooks movable in guides mounted on the window frame. Means is providedfor locking the screen, so that the lower edge thereof may stand atvarious heights from the sill of the window.

The invention is illustrated and described in a specific embodiment, towhich, however, it is not to be restricted. The right is reserved tomake such changes or alterations as the actual reduction to practice maysuggest, in so far as such alterations or changes are compatible inspirit with the annexed claim.

In the accompanying drawings:

Figure l is a view in front elevation showing a window frame with theimproved screen attached thereto.

Fig. 2 is a section on the line 22 of Fig. 1.

Fig. 3 is a section on the line 3-3 of Fig. 1.

Fig. 4 is a detailed elevational view of the binding strips and hooksfor the edge of the screen.

Fig. 5 is a section on the line 5--5 of Fig. 4.

Fig. 6 is a detailed sectional view ofthe guide tracks for thelongitudinal edges of the screen.

ln the drawings there is shown a window frame having the sill l and theoutside .nchitrave on the vertical stiles of which .iicre are attachedthe guides generally desconstitutes the outer covering for a roller 5,the latter being of less length than the length of the shell to providea space in the shell ad acent one end which is spanned by a rod- 6, thelatter connecting a disk member 7 with the roller 5,. the disk member 7lylngadjacent one end of the shell 4, and carrying a stud 8. The roller5 at the opposite end of the shell against which it lies carries a pivotstud 9.

The roller is incased within a housin l0 appropriately supported at theupper en d of the window frame and in one end of this housing the stud 9is rotatably mounted while in the opposite end the stud 8 is fixed, theroller being mounted for angularmovement on the disk 7 which connectswith the stud 8. A spiral spring 10 surrounds the rod 6 and has one endfixed in the disk 7 and the other end fixed in the roller 5. It is thusapparent that as a roller is rotated a torsional strain is imposed uponthe spring 10 so that the spring tends to rotate the roller in theopposite direction immediately the strain is removed.

The screen 3 being attached to the shell 4, as the screen is lowered thetorsional strain referred to is imposed upon the spring 10, and when theforce tending to lower the screen is removed the spring acts to rotatethe roller in such a direction as to coil the screen 3' thereon.

The guides 2 are formed preferably each of a single piece of flat metalbent back on itself to provide a flange portion 11, onesection of thestock being shaped to provide a channel for track portion 12lying-adjacent the flange portion 11. The two remaining portions 13 and14 and the stock forming the guide are spaced apart, as clearly shown inFig. 6, and the two legsor flanges thus provided are crimped as shown at15 and 16 to provide two longitudinal inset ribs.

The screen in being raised" or lowered moves between the flanges or legs13 and 14 and the longitudinal edges of the screen are each equippedwith binding strips 17 placed on opposite sides of'the screen andappropriatcly secured together by suitable fastening means, these stripsserving to secure at suitably spaced intervals the L-shaped' mem-- bers18, the free legs of which move in the channel or guide portions 12.

The flange 'or leg 13 of each guide 2 is made Wider than its mate 14:,and this wider flange is positioned behind the screen 3 as viewed fromthe outside of the window and is formed on its edge with notches 19provided for engagement with a suitable latching mechanism carried onthe inner face oi. the transversely disposed bar 20, the latter beingcarried at the lower or free end of the screen 3, and serving as areinforcing and finishing member for the lower edge.

The latching mechanism for the screen comprises two horizontal rods 21mounted in suitable slide bearings 22 carried upon the inner face of thebar 20. These rods 21 terminate in thumb engaging portions 23, which arepositioned adjacent each other so that the remaining ends of the rodswhich are appropriately flattened may engage the notches 19 formed inthe flanges 13 of the guides 2. Compression springs 24: surrounding therods tend to force them normally in the direction for engagement withthe notches 19 and the rod may be relieved from such engagement only onthe application of the pressure on opposite sides of the thumb or lingengaging members 23. So long as the 21 engage the notches 19, the screenis held in any position of closure to which it may be adjusted.Obviously on the release of the rods from the notches, such. as would bethe case when the thumb engaging portions 23 are pressed toward eachother, the screen 3 may be raised or arness lowered as a result of beingcarried by the spring actuated roller hereinbefore referred to.

From the foregoing description and the accompanying drawings, it isbelieved that a clear enough understanding of the invention is to be hadto render further description unnecessary.

The invention having been described, what is claimed as new and usefulis: a

In a device of the kind described, a spring actuated roller, a screencarried by the roller, er 1 guides for the side or longitudinal edges ofthe screen, the said guides being formed of a single piece of flat metalbent back on itself to provide an attaching flange portion,

one section of the stock of the guide being shaped to provide a channeladjacent the said attaching flange portion and a guide flange connectedwith said stock and at right. angles to the same, the remaining portionoi the stock of the guide being formed to pro-- tached to the side edgesof the screen at spaced intervals and having their free legsslidinglypngaging the channel portions of the guides and their remaininglegs moving between the guide flanges.

In testimony whereof I affix my signature. uh

JOHN HERNAGKL

